Draw vector graphics to scale using a descriptive language
JaxoDraw: Feynman Diagrams made easy!
Model Railway CAD program
Another drawing editor for LaTeX with PSTricks & TikZ
The web-based motion graphics editor for everyone
Vector drawing program for LaTeX using PSTricks
Web-based vector graphics editor
Free yourself
A graphical Finite State Machine (FSM) designer.
Font editor
Jade is a cross-platform diagram editor built on the Qt framework.
Free drawing software for Windows, Mac OS X, and Linux
Interactive designer for Celtic knots
Create and edit SVG graphics directly in ownCloud. Based on svg-edit.
Cuts 3D objects from polystyrene foam (EPS/XPS)